title: Using sheep lines with mutations in single genes to better understand ovarian function.
abstract: Livestock populations have been subjected to strong selection pressure to improve reproductive success, and this has led to the identification of lines of animals with increased fecundity. These animals provide a rich biological resource for discovery of genes and regulatory mechanisms that underpin improved reproductive success. To date, three genes, all related to the transforming growth factor β pathway, have been identified as having mutations that lead to alterations in ovulation in sheep. In addition, several other sheep lines have been identified with putative mutations in single genes with major effects on ovulation rate. This review is focused on the identification of the mutations affecting ovulation rate and how these discoveries have provided new insights into control of ovarian function.
authors.affiliation: AgResearch Centre for Reproduction and Genomics, AgResearch Limited, Invermay Agricultural Centre, Puddle Alley, Private Bag 50034, Mosgiel 9053, New Zealand.
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Juengel
authors.forename: George H
authors.initials: GH
authors.lastname: Davis
authors.forename: Kenneth P
authors.initials: KP
authors.lastname: McNatty
mesh_terms: D000818:Animals; D005260:Female; D009154:Mutation / Q000235:genetics*; D010060:Ovulation / Q000235:genetics*; D012756:Sheep; D016212:Transforming Growth Factor beta / Q000235:genetics*
chemical_list: D016212:Transforming Growth Factor beta